NTN Ball Bearings 2A-BST25X62-1BLXLP4/L588 for Ball Screw

The Brief Description of  NTN Angular Contact Thrust Ball Bearings BST-1B (LXL/L588),

2A-BST-1B (LXL/L588) series: 

The 2A-BST type incorporates the maximum possible number of small balls (compared with those of a standard bearing), has thicker inner and outer rings, and a larger contact angle of 60 degree. Thus, this type of bearing boasts greater axial rigidity. Additionally, since balls are used as the rolling elements, the starting torque of a angular contact thrust ball bearing is less than that of a roller bearing. Open (BST and 2A-BST type) and light-contact seals (BST LXL and 2A-BST LXL type) are available and molded resin cages are standard. Side faces of BST type bearings are flush-ground to provide the same face height difference for both the front and back faces. As a result, bearings of the same part number can be freely combined into DB, DBT, DTBT configurations , and the adjustment for a relevant preload is no longer necessary. Every single bearing is machined to the same face height so that when any arrangement is installed on a ballscrew the unit has optimal preload. For this reason, no time-consuming preload adjustment (adjustment with shims or tightening and loosening while measuring the starting torque) is necessary.

NTN Angular Contact Thrust Ball Bearings Types for Ball Screw Support Bearings:

NTN Angular Contact Thrust Ball Bearings Features:

 3. Special long-life grease is used. (Light-contact seal type)

4. The combination of a unique heat treatment and special grease reduces fretting (by 80% or more for sliding mode, 90% or more for rolling mode, compared to the conventional type). (Light-contact seal type)

5. Pre-grease bearings eliminate the need for further grease packing and allow easier handling. (Lightcontact seal type)

NTN Angular Contact Thrust Ball Bearings 2A-BST25X62-1BLXLP4/L588 Specification:

 NTN Angular Contact Thrust Ball Bearings 2A-BST25X62-1BLXLP4/L588 Applications:

The 2A-BST type bearing is mainly used as the ball screw support bearing to be installed to a ball screw of the machine tool feed system, and two to four rows duplex arrangement is used in many cases. This type is popular because of its easy handling, and greased sealed angular contact ball bearings have been adopted recently. The back-to-back duplex arrangement that allows acquisition of the specified preload by tightening the inner ring is commonly adopted because of its easy assembly. Face-to-face duplex arrangement may be adopted if more precise alignment is required. It is not commonly used for machine tools.

Single row: machine tool spindle,  high frequency motor, gas turbine, centrifuge, differential pinion-shaft, small cars’s front wheel, etc.  

Double row: oil pump, roots blower, air compressor, all kinds of transmission gearbox, fuel injection pump, printing machinery, etc.

NTN Angular Contact Thrust Ball Bearings 2A-BST Series Catalog:

NTN Angular Contact Thrust Ball Bearing 2A-BST25X62-1BLXLP4/L588 Pictures:

Different Kinds of Angular Contact Thrust Ball Bearings:

Shanghai Shengyue Bearing Co., Ltd. is a professional bearing manufacturer and dealer in China. We have been engaged in bearing industry for 15 years and worked on bearing import and export for more than 8 years. We attend international bearing fairs, put in many B2B websites and achieve many customers all over the world, building up a good reputation from our customers.

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1. Price --Highest quality and most competitive price.

2. Warranty----- We provide 1year warranty for all bearings.

3. Delivery fast -----Goods will be sent out within 3 to 5 days for ex-stock.
4. Professional----- We are special in source and sales, as development, methods,

                              conjugations, and handling ,for more than 7 years.  
5. Best service-----Answering e-mails or solving questions quickly.We are 24 hours online.

6.Save freight.---we have many cooperative forwarders to help you choose the best shipping ways.